Thermal properties of PrBa2Cu4O8 prepared at ambient oxygen pressure

H. D. Yang; C. W. Lin; Jiunn-Yuan Lin; T. H. Meen; H. L. Tsay; J. C. Huang; S. R. Sheen; M. K. Wu

doi:10.1016/S0921-4534(97)00800-9

Thermal properties of PrBa₂Cu₄O₈ prepared at ambient oxygen pressure

H. D. Yang^*, C. W. Lin, Jiunn-Yuan Lin, T. H. Meen, H. L. Tsay, J. C. Huang, S. R. Sheen, M. K. Wu

^*Corresponding author for this work

Institute of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Polycrystalline PrBa₂Cu₄O₈ (Pr124) has been prepared at ambient oxygen pressure by nitrite pyrolysis method. Powder x-ray-diffraction patterns show a nearly single R124 phase. Thermogravimetric analysis indicates that its thermal stability is distinct from that of Pr123. Specific heat C has been measured from 0.5 to 40 K, and is very similar to that of Pr123. A maximum of C occurs around 17 K which could be due to a magnetic ordering. Entropy difference ΔS has been calculated from ΔC/T between Pr124 and Y124. The possible origins of ΔS and the related magnetic properties are discussed. Resistivity ρ(T) of Pr124 shows a nearly metallic behavior similar to what was observed in Pr124 made by the O₂-HIP technique. The metallic ρ(T) at low temperatures is of interest and will be discussed.

Original language	English
Pages (from-to)	1407-1408
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	282-287
Issue number	PART 3
DOIs	https://doi.org/10.1016/S0921-4534(97)00800-9
State	Published - 1 Jan 1997

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title = "Thermal properties of PrBa2Cu4O8 prepared at ambient oxygen pressure",

abstract = "Polycrystalline PrBa2Cu4O8 (Pr124) has been prepared at ambient oxygen pressure by nitrite pyrolysis method. Powder x-ray-diffraction patterns show a nearly single R124 phase. Thermogravimetric analysis indicates that its thermal stability is distinct from that of Pr123. Specific heat C has been measured from 0.5 to 40 K, and is very similar to that of Pr123. A maximum of C occurs around 17 K which could be due to a magnetic ordering. Entropy difference ΔS has been calculated from ΔC/T between Pr124 and Y124. The possible origins of ΔS and the related magnetic properties are discussed. Resistivity ρ(T) of Pr124 shows a nearly metallic behavior similar to what was observed in Pr124 made by the O2-HIP technique. The metallic ρ(T) at low temperatures is of interest and will be discussed.",

author = "Yang, {H. D.} and Lin, {C. W.} and Jiunn-Yuan Lin and Meen, {T. H.} and Tsay, {H. L.} and Huang, {J. C.} and Sheen, {S. R.} and Wu, {M. K.}",

year = "1997",

month = jan,

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doi = "10.1016/S0921-4534(97)00800-9",

language = "English",

volume = "282-287",

pages = "1407--1408",

journal = "Physica C: Superconductivity and its Applications",

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publisher = "Elsevier",

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TY - JOUR

T1 - Thermal properties of PrBa2Cu4O8 prepared at ambient oxygen pressure

AU - Yang, H. D.

AU - Lin, C. W.

AU - Lin, Jiunn-Yuan

AU - Meen, T. H.

AU - Tsay, H. L.

AU - Huang, J. C.

AU - Sheen, S. R.

AU - Wu, M. K.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Polycrystalline PrBa2Cu4O8 (Pr124) has been prepared at ambient oxygen pressure by nitrite pyrolysis method. Powder x-ray-diffraction patterns show a nearly single R124 phase. Thermogravimetric analysis indicates that its thermal stability is distinct from that of Pr123. Specific heat C has been measured from 0.5 to 40 K, and is very similar to that of Pr123. A maximum of C occurs around 17 K which could be due to a magnetic ordering. Entropy difference ΔS has been calculated from ΔC/T between Pr124 and Y124. The possible origins of ΔS and the related magnetic properties are discussed. Resistivity ρ(T) of Pr124 shows a nearly metallic behavior similar to what was observed in Pr124 made by the O2-HIP technique. The metallic ρ(T) at low temperatures is of interest and will be discussed.

AB - Polycrystalline PrBa2Cu4O8 (Pr124) has been prepared at ambient oxygen pressure by nitrite pyrolysis method. Powder x-ray-diffraction patterns show a nearly single R124 phase. Thermogravimetric analysis indicates that its thermal stability is distinct from that of Pr123. Specific heat C has been measured from 0.5 to 40 K, and is very similar to that of Pr123. A maximum of C occurs around 17 K which could be due to a magnetic ordering. Entropy difference ΔS has been calculated from ΔC/T between Pr124 and Y124. The possible origins of ΔS and the related magnetic properties are discussed. Resistivity ρ(T) of Pr124 shows a nearly metallic behavior similar to what was observed in Pr124 made by the O2-HIP technique. The metallic ρ(T) at low temperatures is of interest and will be discussed.

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U2 - 10.1016/S0921-4534(97)00800-9

DO - 10.1016/S0921-4534(97)00800-9

M3 - Article

AN - SCOPUS:0031198052

SN - 0921-4534

VL - 282-287

SP - 1407

EP - 1408

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - PART 3

ER -

Thermal properties of PrBa₂Cu₄O₈ prepared at ambient oxygen pressure

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